JPS6234863B2 - - Google Patents
Info
- Publication number
- JPS6234863B2 JPS6234863B2 JP54023691A JP2369179A JPS6234863B2 JP S6234863 B2 JPS6234863 B2 JP S6234863B2 JP 54023691 A JP54023691 A JP 54023691A JP 2369179 A JP2369179 A JP 2369179A JP S6234863 B2 JPS6234863 B2 JP S6234863B2
- Authority
- JP
- Japan
- Prior art keywords
- web
- fibers
- layer
- upper layer
- lower layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000835 fiber Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 18
- 239000002649 leather substitute Substances 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 35
- 239000004744 fabric Substances 0.000 description 8
- 239000004745 nonwoven fabric Substances 0.000 description 8
- 239000010985 leather Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 238000004080 punching Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Nonwoven Fabrics (AREA)
Description
本発明は衣料、靴、鞄、各種ケース、ベルト等
に用いる合成皮革用基材の構成に関するものであ
り、柔軟性にしてかつ強力を有し、反撥弾性に優
れた合成皮革用の基材を得ることを目的とするも
のである。
従来、合成皮革或は擬革用の基材としては、綿
布、ポリエステルトリコツト、編布等の編織布及
びニードルパンチを施した機械的交絡方法による
不織布等が一般に用いられている。
然しながらこれらの基材は個々にそれぞれ欠点
を有し、綿布を基材として使用する場合、ポリ塩
化ビニルやポリアミド樹脂、或はポリウレタンエ
ラストマー等による皮革銀面形成後に於てもボリ
ユーム感が不足するという致命的な欠点がある。
また薄手の合成皮革用基材として使用した場合は
織布の織目模様が皮革表面側に出やすいという欠
点がある。またニードルパンチングによる機械的
交絡処理を施した不織布マツト、或は上記マツト
に単に合成樹脂結合剤を含浸させた不織布マツト
が基材として用いられているが、機械的交絡処理
を施したのみの不織布マツトは柔軟性の点でやや
満点することはできるが、強度的に問題があり、
さらに反撥弾性が悪い等の欠点がある。他方後者
の場合、強度及び反撥弾性は改良されるが、風合
的には硬くなりすぎるきらいがある。
本発明は上記の問題点に鑑み鋭意検討を重ねた
結果、上層に比較的細い繊度の0.5〜1.5デニール
の紡績可能な繊維より形成した目付50〜500ｇ／
m2のウエブ、下層に上層よりも太い繊度の1.6〜
3.0デニールの紡績可能な繊維より形成した目付
200〜500ｇ／m2のウエブの２層構造となし、かつ
上．下層の繊維はニードリングにより相互に交絡
せしめて一体化し上層から下層にかけて順次柔
軟、弾性のエラストマーまたは合成樹脂の付着量
を増加させた密度勾配型となし、上層表面を更に
起毛せしめることによつて得られる柔軟で弾性が
あり、引張強度に優れ、かつボリウム感があり、
銀面としての皮革層との接着性が良好な合成皮革
用基材を提供するものである。
以下本発明の構成を図面に従つて詳細に説明す
る。
図面に示す様に上層１は繊度が0.5デニールか
ら1.5デニールまでの比較的細い天然または化合
成繊維２例えば綿、アセテート、レーヨンやポリ
エステル、ポリアミド、ポリアクリロニトリル、
ビニロン、ポリオレフイン等の繊維や又は混合或
は複合紡糸繊維や中空の繊維等公知のものを使用
してランダム、クロス或はパラレルのウエブ形態
に構成され、ニードルパンチによる機械的処理に
より下層３のウエブの繊維と共に一体に交絡して
いる。
上層１と下層３ウエブとの重量比は１：１〜
１：４の割合で構成することが望ましい。ニード
ルパンチ処理は上下２回打ちで、パンチ数150〜
300／cm2打込み数上下５〜15mmの条件で行われ
る。
下層３は1.6デニールから３デニールの繊度を
有する上記に記載したものと同じ種類の繊維４で
上層と同じ形態のウエブに構成され、同じくニー
ドルパンチにより繊維間相互が絡合すると共に上
層のウエブとも一体に絡合している。
上記の一体化絡合繊維マツト５はポリアクリル
酸エステル共重合体、ポリ塩化ビニル、ポリウレ
タン等の樹脂やポリアクリロニトリルゴム、スチ
レン、ブタジエンゴム等の合成ゴム６を乾式又は
湿式で処理して繊維マツト５に合浸、固定し、上
記繊維マツトの繊維相互の繊維間交点を結合する
と共に上層から下層にかけて順次多くなる様に付
着せしめてなり、下層の表面付近では付着量は最
大となり合皮用基材としての強力を維持する上に
おいて必要不可欠な要素となる。
また上層と下層の重合体付着量の不均一性即
ち、付着量の密度勾配を得るためにはエラストマ
ー又は合成樹脂含浸後の乾燥時に下層側表面より
熱風の吹付け処理などの手段により達成する。
尚重合体の付着量はウエブ構成繊維重量に対し
て５〜40％好ましくは10〜30％の範囲であること
が望ましく、更に加熱、加圧により最終仕上がり
目付が330〜1100ｇ／m2、厚さ1.0〜2.0mm、みか
け密度0.33〜0.70ｇ／cm3の不織布シートを形成す
る。更に上層表面は起毛針布で起毛７が施されて
いる。この起毛処理は菱型断面の針を使用した起
毛針布が適しており、上層ウエブの表面になる程
重合体の付着量が少ないので起毛時に繊維を引出
し易く、起毛効果が大きく、更に起毛による表面
積の増加により、皮革銀面形成時のエラストマ
ー、樹脂重合体の薄板又は溶液との接着面積が増
加し、強度を向上させることができる。
次に実施例により本発明を更に詳細に説明す
る。
実施例
上層として繊度1.5デニール、カツト長38mmの
ポリエステル繊維を用いて目付250ｇ／m2のラン
ダムウエブを形成した。別に下層用として繊度３
デニール、カツト長38mmのポリエステル繊維を用
いて目付300ｇ／m2のランダムウエブを形成し、
その上部に上記のウエブを積層した。この積層ウ
エブにニードリング回数２回打ち、パンチ数
220／cm2（150.70）打込み深さ、上．下（12.10
mm）バーブ数３、針の太さ40Sの条件でニードル
パンチを行ない、目付550ｇ／m2、みかけ密度
0.07ｇ／cm3のニードルパンチ不織布マツトを形成
した。この不織布マツトにアクリル酸エステル共
重合体エマルジヨンを含浸せしめ、樹脂乾燥固形
分付着量が繊維に対して20％になるよう付着させ
た。次いで下層側より150℃の熱風を10分間吹き
当てて乾燥して、樹脂の付着が不織布マツトの下
層表面側を最高として上層側に至り順次減少させ
た目付67ｇ／m2の密度勾配型樹脂結合不織布マツ
トを構成した後熱プレスを行つて厚さ1.5mm、み
かけ密度0.45ｇ／cm3の不織布シートを形成する。
上層側表面をRF型起毛針布（線形、菱形線、
線径0.35／0.24mm、針頭数370／25mm2働角44゜植
込角77゜、基布3ply金井重要工業製）を捲着した
起毛機により起毛処理を行ない柔軟で風合の良好
な合成皮革用基材を形成した。
次に、実施例と諸特性比較のための比較例を示
す。
（比較例 １）
ウエブ構成繊維を繊度1.5デニールのポリエス
テル繊維のみを用いた単層ウエブを用い、他は実
施例１と同一条件、同一処理を行つて同一目付、
密度の合皮用基材を形成した。
（比較例 ２）
ウエブ構成繊維を繊度３デニールのポリエステ
ル繊維のみを用いた単層ウエブを用い、他は実施
例１と同一条件、同一処理を行つて同一目付、密
度の合皮用基材を形成した。
（比較例 ３）
実施例１と同一ウエブ構成、同一処理条件で形
成し、乾燥条件のみを上下両面より120℃の熱風
を10分間吹き当て、更に、140℃で３分間、加熱
を行つて同一目付、密度の合皮用基材を形成し
た。
上記実施例、比較例の諸特性をみるためそれぞ
れテストを行つて次表に示す結果を得た。
The present invention relates to the structure of a base material for synthetic leather used for clothing, shoes, bags, various cases, belts, etc. The present invention relates to a base material for synthetic leather that is flexible, strong, and has excellent rebound properties. The purpose is to obtain. Conventionally, as base materials for synthetic leather or pseudo-leather, woven fabrics such as cotton fabric, polyester tricot, knitted fabric, etc., and nonwoven fabrics produced by mechanical interlacing using needle punching, etc., have been generally used. However, each of these base materials has its own drawbacks, and when cotton fabric is used as a base material, it is said that the volume is insufficient even after forming the leather grain surface with polyvinyl chloride, polyamide resin, polyurethane elastomer, etc. It has a fatal flaw.
Furthermore, when used as a base material for thin synthetic leather, there is a drawback that the weave pattern of the woven fabric tends to appear on the surface of the leather. In addition, nonwoven fabric mats that have been mechanically entangled by needle punching, or nonwoven fabric mats that are simply impregnated with a synthetic resin binder, are used as base materials, but nonwoven fabrics that have only been mechanically entangled Matsuto can get a perfect score in terms of flexibility, but there are problems in terms of strength.
Furthermore, it has drawbacks such as poor rebound resilience. In the latter case, on the other hand, the strength and rebound properties are improved, but the feel tends to be too hard. As a result of extensive studies in view of the above problems, the present invention has been developed by forming the upper layer from spinnable fibers with a relatively fine fineness of 0.5 to 1.5 deniers.
m2 web, the lower layer has a fineness of 1.6~ thicker than the upper layer
Fabric weight made from 3.0 denier spinnable fiber
200 to 500 g/m 2 web layer structure and no top. The fibers in the lower layer are intertwined with each other by needling and integrated, creating a density gradient type in which the amount of flexible and elastic elastomer or synthetic resin adhered to increases sequentially from the upper layer to the lower layer, and by further raising the surface of the upper layer. The resulting material is flexible, elastic, has excellent tensile strength, and has a voluminous feel.
The object of the present invention is to provide a base material for synthetic leather that has good adhesion to a leather layer as a silver surface. The configuration of the present invention will be explained in detail below with reference to the drawings. As shown in the drawing, the upper layer 1 is made of relatively thin natural or synthetic fibers 2 having a fineness of 0.5 denier to 1.5 denier, such as cotton, acetate, rayon, polyester, polyamide, polyacrylonitrile, etc.
The web of the lower layer 3 is constructed by using fibers such as vinylon, polyolefin, mixed or composite spun fibers, hollow fibers, etc. in a random, cross or parallel web form, and is mechanically processed by needle punching to form the lower layer 3 web. The fibers are intertwined together. The weight ratio of upper layer 1 and lower layer 3 web is 1:1 ~
It is desirable that the ratio be 1:4. Needle punch processing is performed twice, upper and lower, and the number of punches is 150 or more.
300/cm 2 The number of strokes is 5 to 15 mm above and below. The lower layer 3 is made of the same type of fibers 4 as described above and has a fineness of 1.6 denier to 3 denier, and is formed into a web with the same form as the upper layer. They are intertwined together. The above-mentioned integrated entangled fiber mat 5 is made by dry or wet treatment of resin such as polyacrylic acid ester copolymer, polyvinyl chloride, polyurethane, or synthetic rubber 6 such as polyacrylonitrile rubber, styrene, butadiene rubber, etc. 5, the fibers of the above-mentioned fiber mat are bonded at their intersection points, and the amount of adhesion increases from the upper layer to the lower layer, and the amount of adhesion is maximum near the surface of the lower layer, forming a synthetic leather base It is an essential element in maintaining the strength of the material. In order to obtain non-uniformity in the amount of polymer deposited between the upper layer and the lower layer, that is, to obtain a density gradient in the amount of deposited polymer, this can be achieved by blowing hot air from the surface of the lower layer during drying after impregnation with the elastomer or synthetic resin. It is desirable that the amount of the polymer deposited is in the range of 5 to 40%, preferably 10 to 30%, based on the weight of the fibers constituting the web, and further heated and pressurized to achieve a final finished area weight of 330 to 1100 g/m 2 and thickness. A nonwoven fabric sheet with a length of 1.0 to 2.0 mm and an apparent density of 0.33 to 0.70 g/cm 3 is formed. Furthermore, the surface of the upper layer is provided with a raised cloth 7. This napping process is suitable for napping clothing using needles with a diamond-shaped cross section.As the surface of the upper layer web has a smaller amount of polymer attached, it is easier to pull out the fibers during napping, and the napping effect is greater. By increasing the surface area, the adhesion area with the elastomer, resin polymer thin plate or solution when forming the leather grain surface increases, and the strength can be improved. Next, the present invention will be explained in more detail with reference to Examples. Example A random web with a basis weight of 250 g/m 2 was formed using polyester fibers with a fineness of 1.5 denier and a cut length of 38 mm as the upper layer. Separately, fineness 3 is used for the lower layer.
A random web with a basis weight of 300 g/m 2 is formed using polyester fibers with a denier and cut length of 38 mm.
The above web was laminated on top of it. This laminated web is needled twice and punched
220/cm 2 (150.70) Depth of driving, top. Bottom (12.10
mm) Perform needle punching under the conditions of barb number 3, needle thickness 40S, fabric weight 550g/m 2 , apparent density
A needle-punched nonwoven mat of 0.07 g/cm 3 was formed. This nonwoven fabric mat was impregnated with an acrylic acid ester copolymer emulsion, and the resin was adhered to the fibers so that the dry solid content was 20%. Then, it was dried by blowing hot air at 150℃ from the lower layer side for 10 minutes, and the resin adhesion was highest on the lower layer surface side of the nonwoven mat and gradually decreased to the upper layer side.A density gradient type resin bond with a basis weight of 67 g/m 2 After forming the nonwoven fabric mat, hot pressing is performed to form a nonwoven fabric sheet having a thickness of 1.5 mm and an apparent density of 0.45 g/cm 3 . The upper surface is covered with RF-type raised clothing (linear, diamond-shaped,
Wire diameter 0.35/0.24mm, number of needle heads 370/25mm, 2 working angles 44°, implantation angles 77°, 3ply base fabric (manufactured by Kanai Kisoku Kogyo) is wrapped using a napping machine to create a soft and textured composite. A base material for leather was formed. Next, a comparative example for comparing various characteristics with the example will be shown. (Comparative Example 1) A single-layer web using only polyester fibers with a fineness of 1.5 denier was used as the web constituent fiber, and the other conditions were the same as in Example 1, the same treatment was performed, and the fabric weight was the same.
A base material for dense synthetic leather was formed. (Comparative Example 2) A single-layer web using only polyester fibers with a fineness of 3 denier as the web constituent fibers was used, and the other conditions were the same as in Example 1, and the same treatment was performed to produce a base material for synthetic leather with the same basis weight and density. Formed. (Comparative Example 3) The same web configuration and processing conditions as in Example 1 were used, and only the drying conditions were blown with hot air at 120°C for 10 minutes from both the upper and lower surfaces, and then heated at 140°C for 3 minutes. A base material for synthetic leather with a certain weight and density was formed. Tests were conducted to examine the characteristics of the above Examples and Comparative Examples, and the results shown in the following table were obtained.
【表】
上表から明らかな如く本発明による合成皮革用
基材は比較例に比べ非常に柔軟でボリウム感があ
り、反撥弾性が良好であると共に強力にもすぐ
れ、特に樹脂又はエラストマー重合体が２層構造
ウエブの下層から上層になるに従つて付着量が減
少する密度勾配をなして付着しているから、クツ
シヨン性が良好で起毛処理に際し繊維を引出し易
く、カツト起毛により毛足の長い起毛表面が得ら
れ、皮革銀面層形成時に銀面として用いるエラス
トマー、樹脂との接着面積ならび接着強度が増大
するなどの種々の効果を有する発明である。[Table] As is clear from the above table, the base material for synthetic leather according to the present invention is much softer and has a more voluminous feel than the comparative example, has good rebound properties, and is also excellent in strength. Since the adhesion forms a density gradient in which the amount of adhesion decreases from the lower layer to the upper layer of the two-layer structure web, the cushioning properties are good and the fibers are easy to pull out during the napping process, and the cut nap creates a long nap. This invention has various effects such as increasing the adhesion area and adhesive strength with the elastomer or resin used as the grain surface when forming the leather grain layer.
図面は本発明の１実施例を示す合成皮革用基材
の構成概略側面図である。
１……上層、２……天然又は化合成繊維、３…
…下層、４……天然又は化合成繊維、５……一体
化絡合繊維マツト、６……樹脂又はエラストマ
ー、７……起毛。
The drawing is a schematic side view of the structure of a base material for synthetic leather showing one embodiment of the present invention. 1... Upper layer, 2... Natural or synthetic fiber, 3...
... lower layer, 4 ... natural or synthetic fiber, 5 ... integrated entangled fiber mat, 6 ... resin or elastomer, 7 ... napping.
Claims (1)
りなるウエブ、下層が1.6〜３デニールの紡績可
能な繊維よりなるウエブの２層構造で構成され、
且つ上層、下層の繊維が互に交絡して、一体層を
形成し、上記繊維層の繊維間交点をエラストマー
又は合成樹脂で結合すると共に上層から下層にか
けて順次エラストマー又は合成樹脂の付着量が増
加する密度勾配型となし、上層部の表面に起毛処
理を施してなる合成皮革用基材。 ２ 上層ウエブ：下層ウエブの重量比が１：１〜
１：４の範囲からなる特許請求の範囲第１項記載
の合成皮革用基材。[Scope of Claims] 1 Consisting of a two-layer structure, the upper layer is a web made of spinnable fibers of 0.5 to 1.5 deniers, and the lower layer is a web made of spinnable fibers of 1.6 to 3 deniers,
In addition, the fibers of the upper and lower layers are intertwined with each other to form an integral layer, and the intersections between the fibers of the fiber layers are bonded with an elastomer or synthetic resin, and the amount of the elastomer or synthetic resin attached increases sequentially from the upper layer to the lower layer. A base material for synthetic leather that has a density gradient type and has a brushed surface on the upper layer. 2 The weight ratio of upper layer web: lower layer web is 1:1 ~
The base material for synthetic leather according to claim 1, which has a ratio of 1:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2369179A JPS55116849A (en) | 1979-02-28 | 1979-02-28 | Synthetic leather substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2369179A JPS55116849A (en) | 1979-02-28 | 1979-02-28 | Synthetic leather substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55116849A JPS55116849A (en) | 1980-09-08 |
| JPS6234863B2 true JPS6234863B2 (en) | 1987-07-29 |
Family
ID=12117445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2369179A Granted JPS55116849A (en) | 1979-02-28 | 1979-02-28 | Synthetic leather substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55116849A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782552A (en) * | 1980-11-13 | 1982-05-24 | Toray Industries | Needle punched nonwoven fabric comprising elastic fiber and production thereof |
-
1979
- 1979-02-28 JP JP2369179A patent/JPS55116849A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55116849A (en) | 1980-09-08 |
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